Space Weather Message Code: WARK05 Serial Number: 1869 Issue Time: 2024 Apr 30 2333 UTC WARNING: Geomagnetic K-index of 5 expected Valid From: 2024 Apr 30 2332 UTC Valid To: 2024 May 01 0300 UTC Warning Condition: Onset NOAA Scale: G1 – Minor NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude. Induced Currents – Weak power

Space Weather Message Code: ALTK04 Serial Number: 2443 Issue Time: 2024 Apr 30 2316 UTC ALERT: Geomagnetic K-index of 4 Threshold Reached: 2024 Apr 30 2315 UTC Synoptic Period: 2100-2400 UTC Active Warning: Yes Comment: Conditions were likely first reached at approximately 30/1955 UTC. However, a major network outage prevented alert issuance. NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of

Space Weather Message Code: WARK04 Serial Number: 4599 Issue Time: 2024 Apr 30 2243 UTC WARNING: Geomagnetic K-index of 4 expected Valid From: 2024 Apr 30 2242 UTC Valid To: 2024 May 01 0300 UTC Warning Condition: Persistence Comment: Conditions were likely first reached at approximately 30/1642 UTC. However, a major network outage prevented warning issuance. NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of

Space Weather Message Code: WARK04 Serial Number: 4598 Issue Time: 2024 Apr 30 1642 UTC WARNING: Geomagnetic K-index of 4 expected Valid From: 2024 Apr 30 1642 UTC Valid To: 2024 Apr 30 2359 UTC Warning Condition: Onset NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude. Induced Currents – Weak power grid fluctuations can occur. Aurora

Space Weather Message Code: ALTK04 Serial Number: 2442 Issue Time: 2024 Apr 28 0232 UTC ALERT: Geomagnetic K-index of 4 Threshold Reached: 2024 Apr 28 0230 UTC Synoptic Period: 0000-0300 UTC Active Warning: Yes NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude. Induced Currents – Weak power grid fluctuations can occur. Aurora – Aurora may be

Space Weather Message Code: WARK04 Serial Number: 4597 Issue Time: 2024 Apr 27 1416 UTC WARNING: Geomagnetic K-index of 4 expected Valid From: 2024 Apr 27 1415 UTC Valid To: 2024 Apr 28 0600 UTC Warning Condition: Onset NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude. Induced Currents – Weak power grid fluctuations can occur. Aurora

Space Weather Message Code: WARK04 Serial Number: 4596 Issue Time: 2024 Apr 26 2300 UTC EXTENDED WARNING: Geomagnetic K-index of 4 expected Extension to Serial Number: 4595 Valid From: 2024 Apr 26 0500 UTC Now Valid Until: 2024 Apr 27 1200 UTC Warning Condition: Onset NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude. Induced Currents –

Space Weather Message Code: ALTK05 Serial Number: 1571 Issue Time: 2024 Apr 26 1651 UTC ALERT: Geomagnetic K-index of 5 Threshold Reached: 2024 Apr 26 1649 UTC Synoptic Period: 1500-1800 UTC Active Warning: Yes NOAA Scale: G1 – Minor NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude. Induced Currents – Weak power grid fluctuations can occur.

Space Weather Message Code: WARK05 Serial Number: 1868 Issue Time: 2024 Apr 26 1648 UTC WARNING: Geomagnetic K-index of 5 expected Valid From: 2024 Apr 26 1646 UTC Valid To: 2024 Apr 26 2359 UTC Warning Condition: Onset NOAA Scale: G1 – Minor NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude. Induced Currents – Weak power

Space Weather Message Code: ALTK04 Serial Number: 2441 Issue Time: 2024 Apr 26 1459 UTC ALERT: Geomagnetic K-index of 4 Threshold Reached: 2024 Apr 26 1456 UTC Synoptic Period: 1200-1500 UTC Active Warning: Yes NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude. Induced Currents – Weak power grid fluctuations can occur. Aurora – Aurora may be